Wrong directions in README.md

[andreasciamanna]

The "prefer-stable" property must be in the package root and not in the requirements property.

I might be wrong, but for sure the way is proposed in the README.md doesn't work for me, as far as I know, is not supposed to work that way.

I'm talking about this:

"require-dev": {
   "squizlabs/php_codesniffer": "*",
   "wimg/php-compatibility": "*",
   "simplyadmire/composer-plugins" : "@dev",
   "prefer-stable" : true
},

It should be like that instead:

{
  ...
  "prefer-stable" : true,
  "require-dev": {
    "squizlabs/php_codesniffer": "*",
    "wimg/php-compatibility": "*",
    "simplyadmire/composer-plugins" : "@dev"
  },
...
}

[wimg]

Thanks for reporting. This has been corrected.